US Patent No: 5,001,752

Number of patents in Portfolio can not be more than 2000

Public/key date-time notary facility

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A time notarization apparatus and method is disclosed which uses a secure, microprocessor based hardware platform which performs public key cryptographic operations to obtain trusted time stamping with a minimum of intervention by third parties. The hardware platform is encapsulated in a secure fashion so that the device's timestamping mechanism may not be readily tampered with or altered. The hardware platform includes at least one digital clock and a stable, secure storage device to record the private half of a public/private key pair. Coupled to both the digital clock and the storage device is a data processing device which performs public key signature operations in a secure and tamper-proof manner. Only the processing device has access to the secure storage device and its associated private key. The hardware platform also includes input/output means which receives a digital message which is to be digitally signed and timestamped and which outputs the resulting timestamped signature generated by the device. The hardware platform also includes a power source, (e.g., an on-board battery) to ensure the accuracy of the device's digital clock and the security of storage data prior to installation or in case of a power failure.

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First Claim

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Patent Owner(s)

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International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fischer, Addison M 60 14th Ave. South, Naples, FL 33942 31 3473

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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Atari, Inc. (1)
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SIEMENS CORPORATION (2)
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (18)
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CHRYSALIS-ITS INC. (1)
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NANT HEALTH, LLC (2)
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NANTHEALTH, INC. (2)
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Pitney Bowes Inc. (7)
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HITACHI, LTD. (2)
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RATEZE REMOTE MGMT. L.L.C. (3)
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APPLE INC. (2)
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THALES HOLDINGS UK PLC (2)
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DFS LINKAGES, INC. (4)
6,381,696 Method and system for transient key digital time stamps 32 1998
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KABUSHIKI KAISHA TOSHIBA (1)
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INTERNATIONAL BUSINESS MACHINES CORPORATION (14)
* 5,200,999 Public key cryptosystem key management based on control vectors 145 1991
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7,519,824 Time stamping method employing multiple receipts linked by a nonce 25 1999
7,490,241 Time stamping method employing user specified time 4 1999
7,315,948 Time stamping method employing a separate ticket and stub 5 1999
6,993,656 Time stamping method using aged time stamp receipts 5 1999
6,965,998 Time stamping method using time-based signature key 4 1999
6,918,042 Secure configuration of a digital certificate for a printer or other network device 23 2001
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* 2008/0288,779 Generating and verifying trusted digital time stamp 4 2008
 
CHARTOLEAUX KG LIMITED LIABILITY COMPANY (1)
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SAP SE (2)
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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
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INTERTRUST TECHNOLOGIES CORPORATION (74)
6,157,721 Systems and methods using cryptography to protect secure computing environments 494 1996
5,943,422 Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels 889 1996
5,892,900 Systems and methods for secure transaction management and electronic rights protection 2260 1996
5,910,987 Systems and methods for secure transaction management and electronic rights protection 863 1996
5,917,912 System and methods for secure transaction management and electronic rights protection 663 1997
5,915,019 Systems and methods for secure transaction management and electronic rights protection 688 1997
5,920,861 Techniques for defining using and manipulating rights management data structures 596 1997
5,982,891 Systems and methods for secure transaction management and electronic rights protection 936 1997
6,112,181 Systems and methods for matching, selecting, narrowcasting, and/or classifying based on rights management and/or other information 911 1997
6,253,193 Systems and methods for the secure transaction management and electronic rights protection 673 1998
6,185,683 Trusted and secure techniques, systems and methods for item delivery and execution 717 1998
6,240,185 Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels 347 1999
7,233,948 Methods and apparatus for persistent control and protection of content 204 1999
6,138,119 Techniques for defining, using and manipulating rights management data structures 471 1999
6,363,488 Systems and methods for secure transaction management and electronic rights protection 523 1999
7,133,845 System and methods for secure transaction management and electronic rights protection 153 1999
6,389,402 Systems and methods for secure transaction management and electronic rights protection 422 1999
6,237,786 Systems and methods for secure transaction management and electronic rights protection 416 1999
7,069,451 Systems and methods for secure transaction management and electronic rights protection 102 1999
6,427,140 Systems and methods for secure transaction management and electronic rights protection 412 1999
7,133,846 Digital certificate support system, methods and techniques for secure electronic commerce transaction and rights management 226 1999
6,658,568 Trusted infrastructure support system, methods and techniques for secure electronic commerce transaction and rights management 467 1999
7,165,174 Trusted infrastructure support systems, methods and techniques for secure electronic commerce transaction and rights management 69 1999
7,092,914 Methods for matching, selecting, narrowcasting, and/or classifying based on rights management and/or other information 46 2000
7,243,236 Systems and methods for using cryptography to protect secure and insecure computing environments 37 2000
7,430,670 Software self-defense systems and methods 116 2000
7,143,290 Trusted and secure techniques, systems and methods for item delivery and execution 42 2000
7,062,500 Techniques for defining, using and manipulating rights management data structures 97 2000
7,095,854 Systems and methods for secure transaction management and electronic rights protection 50 2000
6,292,569 Systems and methods using cryptography to protect secure computing environments 336 2000
6,948,070 Systems and methods for secure transaction management and electronic rights protection 132 2000
7,076,652 Systems and methods for secure transaction management and electronic rights protection 140 2001
6,449,367 Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels 319 2001
7,120,800 Systems and methods for secure transaction management and electronic rights protection 95 2001
7,120,802 Systems and methods for using cryptography to protect secure computing environments 34 2001
* 2002/0023,214 Systems and methods using cryptography to protect secure computing environments 24 2001
7,124,302 Systems and methods for secure transaction management and electronic rights protection 117 2001
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7,051,212 Systems and methods for secure transaction management and electronic rights protection 58 2002
6,618,484 Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels 195 2002
7,143,066 Systems and methods for matching, selecting, narrowcasting, and/or classifying based on rights management and/or other information 75 2002
7,110,983 Methods for matching, selecting, narrowcasting, and/or classifying based on rights management and/or other information 78 2002
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8,307,212 Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels 1 2003
7,100,199 Systems and methods for secure transaction management and electronic rights protection 86 2003
* 2004/0103,305 Systems and methods for secure transaction management and electronic rights protection 38 2003
8,751,793 Trusted infrastructure support systems, methods and techniques for secure electronic commerce transaction and rights management 8 2003
* 2004/0123,129 Trusted infrastructure support systems, methods and techniques for secure electronic commerce transaction and rights management 116 2003
7,415,617 Trusted infrastructure support systems, methods and techniques for secure electronic commerce, electronic transactions, commerce process control and automation, distributed computing, and rights management 103 2004
* 2005/0177,716 Systems and methods for secure transaction management and electronic rights protection 74 2005
7,392,395 Trusted and secure techniques, systems and methods for item delivery and execution 18 2005
7,281,133 Trusted and secure techniques, systems and methods for item delivery and execution 30 2005
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7,844,835 Systems and methods for secure transaction management and electronic rights protection 20 2005
8,533,851 Systems and methods for secure transaction management and electronic rights protection 8 2006
* 2007/0226,807 Systems and methods for secure transaction management and electronic rights protection 39 2006
* 2007/0061,594 Systems and methods for secure transaction management and electronic rights protection 39 2006
8,185,473 Trusted infrastructure support systems, methods and techniques for secure electronic commerce, electronic transactions, commerce process control and automation, distributed computing, and rights management 23 2006
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* 2006/0206,397 Cryptographic methods, apparatus and systems for storage media electronic right management in closed and connected appliances 3 2006
7,917,749 Systems and methods for secure transaction management and electronic rights protection 13 2006
8,543,842 System and methods for secure transaction management and electronics rights protection 5 2006
7,925,898 Systems and methods using cryptography to protect secure computing environments 9 2006
* 2007/0064,943 Systems and methods for secure transaction management and electronic rights protection 10 2006
8,291,238 Systems and methods for secure transaction management and electronic rights protection 130 2007
8,639,625 Systems and methods for secure transaction management and electronic rights protection 10 2007
8,181,021 Systems and methods for secure transaction management and electronic rights protection 6 2007
8,055,913 Systems and methods for secure transaction management and electronic rights protection 11 2007
* 2008/0034,406 Systems and methods for secure transaction management and electronic rights protection 18 2007
* 2008/0034,231 Systems and methods for secure transaction management and electronic rights protection 7 2007
 
The Ascent Group Ltd. (2)
* 8,656,166 Storage and authentication of data transactions 1 2012
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EORIGINAL, INC. (1)
* 7,162,635 System and method for electronic transmission, storage, and retrieval of authenticated electronic original documents 44 2000
 
FUJITSU LIMITED (2)
6,253,331 Timer apparatus and computer 7 1998
6,507,910 Timer apparatus and computer 2 2001
 
CERTIFIED MEASUREMENTS, LLC (2)
6,289,453 Method and apparatus for secure measurement certification 112 1998
8,549,310 Method and apparatus for secure measurement certification 0 2009
 
WALKER ASSET MANAGEMENT LTD. PARTNERSHIP (2)
* 5,923,763 Method and apparatus for secure document timestamping 166 1996
* 5,828,751 Method and apparatus for secure measurement certification 100 1996
 
FIRST DATA CORPORATION (20)
7,552,333 Trusted authentication digital signature (tads) system 26 2001
7,500,272 Manufacturing unique devices that generate digital signatures 14 2001
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7,936,869 Verifying digital signature based on shared knowledge 1 2005
7,869,593 Software for providing based on shared knowledge public keys having same private key 3 2005
7,693,277 Generating digital signatures using ephemeral cryptographic key 0 2005
7,593,527 Providing digital signature and public key based on shared knowledge 7 2005
7,490,239 Facilitating digital signature based on ephemeral private key 4 2005
* 2006/0156,013 DIGITAL SIGNATURE SOFTWARE USING EPHEMERAL PRIVATE KEY AND SYSTEM 2 2005
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* 2006/0153,370 GENERATING PUBLIC-PRIVATE KEY PAIR BASED ON USER INPUT DATA 10 2005
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* 2006/0153,367 DIGITAL SIGNATURE SYSTEM BASED ON SHARED KNOWLEDGE 2 2005
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GRAPHON CORPORATION (3)
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8,510,226 Method for synchronous encryption between a client and a licensing agent 6 2007
 
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6,571,344 Method and apparatus for authenticating time-sensitive interactive communications 27 1999
 
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6,948,065 Platform and method for securely transmitting an authorization secret 18 2000
7,076,802 Trusted system clock 10 2002
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NIPPON TELEGRAPH AND TELEPHONE CORPORATION (1)
6,931,537 Folder type time stamping system and distributed time stamping system 17 2000
 
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EMERSON RADIO CORP. (2)
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TimeCertain LLC (3)
6,792,536 Smart card system and methods for proving dates in digital files 93 1999
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* 2005/0160,272 System and method for providing trusted time in content of digital data files 45 2004
 
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP (2)
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NEOPOST TECHNOLOGIES (1)
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DATUM CORP (LIMITED USE LICENSE FOR IP - NO PATENT FILING AUTHORIZATION) (1)
6,393,126 System and methods for generating trusted and authenticatable time stamps for electronic documents 53 2000
 
United Services Automobile Association (USAA) (3)
8,083,129 Systems and methods for electronic document delivery, execution, and return 0 2008
8,286,859 Systems and methods for electronic document delivery, execution, and return 0 2011
8,708,225 Systems and methods for electronic document delivery, execution, and return 0 2012
 
INVENTOR HOLDINGS, LLC (9)
8,055,509 Methods and apparatus for increasing and/or for monitoring a party's compliance with a schedule for taking medicines 6 2000
6,959,387 Method and apparatus for verifying secure document timestamping 2 2001
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8,069,056 Methods and apparatus for increasing and/or for monitoring a party's compliance with a schedule for taking medicines 13 2006
7,801,745 Methods and apparatus for increasing and/or monitoring a party's compliance with a schedule for taking medicines 17 2006
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RE42893 Method and apparatus for verifying secure document timestamping 1 2006
RE42018 Method and apparatus for verifying secure document timestamping 0 2006
 
RAM OPPORTUNITY FUND I LLC (1)
* 2005/0125,656 Electronic notary system and method for long-term digital signature authentication 12 2004
 
MICROSOFT TECHNOLOGY LICENSING, LLC (22)
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8,347,078 Device certificate individualization 1 2004
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* 2006/0107,328 Isolated computing environment anchored into CPU and motherboard 19 2004
8,725,646 Output protection levels 0 2005
9,363,481 Protected media pipeline 0 2005
8,438,645 Secure clock with grace periods 1 2005
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8,353,046 System and method for delivery of a modular operating system 1 2005
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8,176,564 Special PC mode entered upon detection of undesired state 5 2005
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8,336,085 Tuning product policy using observed evidence of customer behavior 2 2005
* 2006/0107,306 Tuning product policy using observed evidence of customer behavior 14 2005
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8,700,535 Issuing a publisher use license off-line in a digital rights management (DRM) system 0 2008
9,189,605 Protected computing environment 0 2009
8,719,171 Issuing a publisher use license off-line in a digital rights management (DRM) system 0 2010
8,781,969 Extensible media rights 1 2010
9,336,359 Device certificate individualization 0 2012
9,224,168 Tuning product policy using observed evidence of customer behavior 0 2012
 
Time Certain, LLC (4)
6,948,069 Method and system for determining and maintaining trust in digital image files with certifiable time 48 2000
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7,409,557 System and method for distributing trusted time 13 2005
* 2009/0083,372 SYSTEM AND METHODS FOR DISTRIBUTING TRUSTED TIME 45 2008
 
WALKER ASSET MANAGEMENT LIMITED PARTNERSHIP (2)
* 6,111,953 Method and apparatus for authenticating a document 72 1997
6,263,438 Method and apparatus for secure document timestamping 89 1998
 
OLogN Technologies AG (2)
9,185,094 Systems, methods and apparatuses for the secure transmission and restricted use of media content 0 2013
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GOOGLE INC. (1)
6,742,119 Time stamping method using time delta in key certificate 12 1999
 
CRYPTOMATHIC A/S (1)
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S.F. IP PROPERTIES 59 LLC (1)
* 2007/0157,021 SECURE SYSTEM FOR THE ISSUANCE, ACQUISITION, AND REDEMPTION OF CERTIFICATES IN A TRANSACTION NETWORK 9 2007
 
STORAGE TECHNOLOGY CORPORATION (1)
* 2003/0126,447 Trusted high stability time source 1 2001
 
CERTCO, LLC (6)
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WALKER DIGITAL, LLC (8)
7,553,235 Method and apparatus for outputting a result of a game via a container 4 2006
* 2006/0285,441 SYSTEMS AND METHODS FOR IMPROVED HEALTH CARE COMPLIANCE 48 2006
* 2006/0280,035 SYSTEMS AND METHODS FOR IMPROVED HEALTH CARE COMPLIANCE 6 2006
* 2006/0276,931 SYSTEMS AND METHODS FOR IMPROVED HEALTH CARE COMPLIANCE 0 2006
* 2006/0234,793 METHOD AND APPARATUS FOR OUTPUTTING A RESULT OF A GAME VIA A CONTAINER 2 2006
* 2006/0234,792 METHOD AND APPARATUS FOR OUTPUTTING A RESULT OF A GAME VIA A CONTAINER 2 2006
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8,250,369 Method and apparatus for secure measurement certification 0 2009
 
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* 2003/0145,200 System and method for authenticating data transmissions from a digital scanner 9 2002
 
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* 5,812,669 Method and system for providing secure EDI over an open network 98 1995
 
ROVI SOLUTIONS CORPORATION (4)
8,479,305 Method and system for managing a data object so as to comply with predetermined conditions for usage 0 1998
8,479,306 Method and system for managing a data object so as to comply with predetermined condition for usage 2 1999
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RMAIL LIMITED (1)
* 6,182,219 Apparatus and method for authenticating the dispatch and contents of documents 64 1997
 
RDSK, INC. (1)
* 6,848,048 Method and apparatus for providing verifiable digital signatures 35 2000
 
JORASCH, JAMES A. (6)
7,553,234 Method and apparatus for outputting a result of a game via a container 6 2004
8,092,224 Systems and methods for improved health care compliance 6 2005
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8,353,752 Method and apparatus for outputting a result of a game via a container 0 2006
8,262,394 Systems and methods for improved health care compliance 2 2006
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TELCORDIA TECHNOLOGIES, INC. (2)
* 5,136,646 Digital document time-stamping with catenate certificate 312 1991
* RE34954 Method for secure time-stamping of digital documents 171 1993
 
SONY INTERACTIVE ENTERTAINMENT AMERICA LLC (4)
* 7,664,709 Method and system for securely distributing computer software products 6 2007
* 2007/0112,686 METHOD AND SYSTEM FOR SECURELY DISTRIBUTING COMPUTER SOFTWARE PRODUCTS 5 2007
* 8,577,808 Methods for securely distributing computer software products 0 2010
* 2010/0115,507 Methods for Securely Distributing Computer Software Products 2 2010
 
FUJITSU LIMITED & CITIZEN WATCH CO., LTD. (1)
* 2006/0195,697 Method of supplying power to time-stamping device, security device, and time-correcting device 1 2005
 
E-CONTACT TECHNOLOGIES LLC (1)
* 5,189,700 Devices to (1) supply authenticated time and (2) time stamp and authenticate digital documents 108 1991
 
AGILENT TECHNOLOGIES, INC. (1)
* 2004/0203,868 Measurement authentication 11 2002
 
PERSONAL PATH SYSTEMS, INC. (1)
* 2003/0190,046 Three party signing protocol providing non-linkability 41 2002
 
AT&T CORP. (4)
* 6,101,603 System and method for using a second resource to store a data element from a first resource in a first-in last-out stack 1 1998
* 6,098,170 System and method for using a second resource to store a data element from a first resource in a first-in first-out queue 2 1998
6,249,871 System and method for using a second resource to store a data element from a first resource in a first-in last-out stack 0 2000
6,237,094 System and method for using a second resource to store a data element from a first resource in a first-in first-out queue 0 2000
* Cited By Examiner